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Published on: April 9, 2019
Single nanoscale cluster species revealed by 1H NMR diffusion-ordered spectroscopy and small-angle X-ray scattering
Anna F Oliveri1, Matthew E Carnes, Matthew M Baseman
1Department of Chemistry and Materials Science Institute, University of Oregon, Eugene, Oregon 97403-1253, USA.
Abstract:
A solved structure: The hydrated Ga(13) cluster, [Ga(13)(μ(3)-OH)(6)(μ-OH)(18)(H(2)O)(24)](NO(3))(15)], persists as a discrete nanoscale structure in an aqueous polar solvent at millimolar concentration. SAXS data confirm the presence of Ga(13) in dimethyl sulfoxide (DMSO). In aqueous [D(6)]DMSO (1)H NMR signals for the hydroxo and aquo ligands of Ga(13) were detected, thus showing a cluster with a hydrodynamic radius of (11.2±0.8) Å (see picture).

